package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.time.LocalDateTime;

/**
 * @author hyj
 * @create 2023--09--03
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;


    /**
     *
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){

        /**
         * 1.将页面提交的密码password进行md5加密
         * 2.根据页面提交的用户名username查询数据库,查询不到失败
         * 3.密码对比,不一致登录失败
         * 4.查看员工状态,status为0则是禁用状态
         * 5.登录成功,将员工id存入session返回登录结果
         */

        //1.将页面提交的密码password进行md5加密
        String password = employee.getPassword();
        //使用byte数组的方式传入
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据页面提交的用户名username查询数据库,查询不到失败
        LambdaQueryWrapper<Employee> employeeLambdaQueryWrapper = new LambdaQueryWrapper<>();
        employeeLambdaQueryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(employeeLambdaQueryWrapper);
        if(emp == null){
            return R.error("登录失败");
        }

        //3.密码对比,不一致登录失败
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }

        //4.查看员工状态,status为0则是禁用状态
        if(emp.getStatus() == 0){
            return R.error("账号被禁用");
        }

        //登录成功,将员工id存入session返回登录结果
        request.getSession().setAttribute("employee",emp.getId());
            return R.success(emp);
    }

    /**
     * 员工退出按钮
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }


    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());
        //设置初始密码,需要md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());

//        Long empId =(Long) request.getSession().getAttribute("employee");
//        System.out.println(empId);
//
//        employee.setCreateUser(empId);
//        employee.setUpdateUser(empId);

        employeeService.save(employee);

        return R.success("新增员工成功");
    }


    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){

        //构造分页构造器
        Page pageInfo = new Page(page, pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> employeeLambdaQueryWrapper = new LambdaQueryWrapper<>();

        //添加过滤条件
        employeeLambdaQueryWrapper.like(StringUtils.isNotBlank(name),Employee::getName,name);

        //添加排序条件
        employeeLambdaQueryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,employeeLambdaQueryWrapper);

        return R.success(pageInfo);

    }

    /**
     * 启用/禁用员工账号
     * @param request
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        long id = Thread.currentThread().getId();


//        Long empId =(Long) request.getSession().getAttribute("employee");
//        employee.setUpdateTime(LocalDateTime.now());
//        employee.setUpdateUser(empId);
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");

    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        Employee employee = employeeService.getById(id);
        if (employee != null) {
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }

}
